diff options
Diffstat (limited to 'app/javascript/flavours/glitch/features/audio/index.js')
| -rw-r--r-- | app/javascript/flavours/glitch/features/audio/index.js | 537 |
1 files changed, 537 insertions, 0 deletions
diff --git a/app/javascript/flavours/glitch/features/audio/index.js b/app/javascript/flavours/glitch/features/audio/index.js new file mode 100644 index 000000000..181d8e980 --- /dev/null +++ b/app/javascript/flavours/glitch/features/audio/index.js @@ -0,0 +1,537 @@ +import React from 'react'; +import PropTypes from 'prop-types'; +import { defineMessages, injectIntl } from 'react-intl'; +import { formatTime } from 'flavours/glitch/features/video'; +import Icon from 'flavours/glitch/components/icon'; +import classNames from 'classnames'; +import { throttle } from 'lodash'; +import { getPointerPosition, fileNameFromURL } from 'flavours/glitch/features/video'; +import { debounce } from 'lodash'; + +const hex2rgba = (hex, alpha = 1) => { + const [r, g, b] = hex.match(/\w\w/g).map(x => parseInt(x, 16)); + return `rgba(${r}, ${g}, ${b}, ${alpha})`; +}; + +const messages = defineMessages({ + play: { id: 'video.play', defaultMessage: 'Play' }, + pause: { id: 'video.pause', defaultMessage: 'Pause' }, + mute: { id: 'video.mute', defaultMessage: 'Mute sound' }, + unmute: { id: 'video.unmute', defaultMessage: 'Unmute sound' }, + download: { id: 'video.download', defaultMessage: 'Download file' }, +}); + +const TICK_SIZE = 10; +const PADDING = 180; + +export default @injectIntl +class Audio extends React.PureComponent { + + static propTypes = { + src: PropTypes.string.isRequired, + alt: PropTypes.string, + poster: PropTypes.string, + duration: PropTypes.number, + width: PropTypes.number, + height: PropTypes.number, + editable: PropTypes.bool, + fullscreen: PropTypes.bool, + intl: PropTypes.object.isRequired, + cacheWidth: PropTypes.func, + backgroundColor: PropTypes.string, + foregroundColor: PropTypes.string, + accentColor: PropTypes.string, + }; + + state = { + width: this.props.width, + currentTime: 0, + buffer: 0, + duration: null, + paused: true, + muted: false, + volume: 0.5, + dragging: false, + }; + + setPlayerRef = c => { + this.player = c; + + if (this.player) { + this._setDimensions(); + } + } + + _setDimensions () { + const width = this.player.offsetWidth; + const height = this.props.fullscreen ? this.player.offsetHeight : (width / (16/9)); + + if (this.props.cacheWidth) { + this.props.cacheWidth(width); + } + + this.setState({ width, height }); + } + + setSeekRef = c => { + this.seek = c; + } + + setVolumeRef = c => { + this.volume = c; + } + + setAudioRef = c => { + this.audio = c; + + if (this.audio) { + this.setState({ volume: this.audio.volume, muted: this.audio.muted }); + } + } + + setCanvasRef = c => { + this.canvas = c; + + if (c) { + this.canvasContext = c.getContext('2d'); + } + } + + componentDidMount () { + window.addEventListener('resize', this.handleResize, { passive: true }); + } + + componentDidUpdate (prevProps, prevState) { + if (prevProps.src !== this.props.src || this.state.width !== prevState.width || this.state.height !== prevState.height) { + this._clear(); + this._draw(); + } + } + + componentWillUnmount () { + window.removeEventListener('resize', this.handleResize); + } + + togglePlay = () => { + if (this.state.paused) { + this.setState({ paused: false }, () => this.audio.play()); + } else { + this.setState({ paused: true }, () => this.audio.pause()); + } + } + + handleResize = debounce(() => { + if (this.player) { + this._setDimensions(); + } + }, 250, { + trailing: true, + }); + + handlePlay = () => { + this.setState({ paused: false }); + + if (this.canvas && !this.audioContext) { + this._initAudioContext(); + } + + if (this.audioContext && this.audioContext.state === 'suspended') { + this.audioContext.resume(); + } + + this._renderCanvas(); + } + + handlePause = () => { + this.setState({ paused: true }); + + if (this.audioContext) { + this.audioContext.suspend(); + } + } + + handleProgress = () => { + const lastTimeRange = this.audio.buffered.length - 1; + + if (lastTimeRange > -1) { + this.setState({ buffer: Math.ceil(this.audio.buffered.end(lastTimeRange) / this.audio.duration * 100) }); + } + } + + toggleMute = () => { + const muted = !this.state.muted; + + this.setState({ muted }, () => { + this.audio.muted = muted; + }); + } + + handleVolumeMouseDown = e => { + document.addEventListener('mousemove', this.handleMouseVolSlide, true); + document.addEventListener('mouseup', this.handleVolumeMouseUp, true); + document.addEventListener('touchmove', this.handleMouseVolSlide, true); + document.addEventListener('touchend', this.handleVolumeMouseUp, true); + + this.handleMouseVolSlide(e); + + e.preventDefault(); + e.stopPropagation(); + } + + handleVolumeMouseUp = () => { + document.removeEventListener('mousemove', this.handleMouseVolSlide, true); + document.removeEventListener('mouseup', this.handleVolumeMouseUp, true); + document.removeEventListener('touchmove', this.handleMouseVolSlide, true); + document.removeEventListener('touchend', this.handleVolumeMouseUp, true); + } + + handleMouseDown = e => { + document.addEventListener('mousemove', this.handleMouseMove, true); + document.addEventListener('mouseup', this.handleMouseUp, true); + document.addEventListener('touchmove', this.handleMouseMove, true); + document.addEventListener('touchend', this.handleMouseUp, true); + + this.setState({ dragging: true }); + this.audio.pause(); + this.handleMouseMove(e); + + e.preventDefault(); + e.stopPropagation(); + } + + handleMouseUp = () => { + document.removeEventListener('mousemove', this.handleMouseMove, true); + document.removeEventListener('mouseup', this.handleMouseUp, true); + document.removeEventListener('touchmove', this.handleMouseMove, true); + document.removeEventListener('touchend', this.handleMouseUp, true); + + this.setState({ dragging: false }); + this.audio.play(); + } + + handleMouseMove = throttle(e => { + const { x } = getPointerPosition(this.seek, e); + const currentTime = this.audio.duration * x; + + if (!isNaN(currentTime)) { + this.setState({ currentTime }, () => { + this.audio.currentTime = currentTime; + }); + } + }, 15); + + handleTimeUpdate = () => { + this.setState({ + currentTime: this.audio.currentTime, + duration: Math.floor(this.audio.duration), + }); + } + + handleMouseVolSlide = throttle(e => { + const { x } = getPointerPosition(this.volume, e); + + if(!isNaN(x)) { + this.setState({ volume: x }, () => { + this.audio.volume = x; + }); + } + }, 15); + + handleMouseEnter = () => { + this.setState({ hovered: true }); + } + + handleMouseLeave = () => { + this.setState({ hovered: false }); + } + + _initAudioContext () { + const context = new AudioContext(); + const analyser = context.createAnalyser(); + const source = context.createMediaElementSource(this.audio); + + analyser.smoothingTimeConstant = 0.6; + analyser.fftSize = 2048; + + source.connect(analyser); + source.connect(context.destination); + + this.audioContext = context; + this.analyser = analyser; + } + + handleDownload = () => { + fetch(this.props.src).then(res => res.blob()).then(blob => { + const element = document.createElement('a'); + const objectURL = URL.createObjectURL(blob); + + element.setAttribute('href', objectURL); + element.setAttribute('download', fileNameFromURL(this.props.src)); + + document.body.appendChild(element); + element.click(); + document.body.removeChild(element); + + URL.revokeObjectURL(objectURL); + }).catch(err => { + console.error(err); + }); + } + + _renderCanvas () { + requestAnimationFrame(() => { + this.handleTimeUpdate(); + this._clear(); + this._draw(); + + if (!this.state.paused) { + this._renderCanvas(); + } + }); + } + + _clear () { + this.canvasContext.clearRect(0, 0, this.state.width, this.state.height); + } + + _draw () { + this.canvasContext.save(); + + const ticks = this._getTicks(360 * this._getScaleCoefficient(), TICK_SIZE); + + ticks.forEach(tick => { + this._drawTick(tick.x1, tick.y1, tick.x2, tick.y2); + }); + + this.canvasContext.restore(); + } + + _getRadius () { + return parseInt(((this.state.height || this.props.height) - (PADDING * this._getScaleCoefficient()) * 2) / 2); + } + + _getScaleCoefficient () { + return (this.state.height || this.props.height) / 982; + } + + _getTicks (count, size, animationParams = [0, 90]) { + const radius = this._getRadius(); + const ticks = this._getTickPoints(count); + const lesser = 200; + const m = []; + const bufferLength = this.analyser ? this.analyser.frequencyBinCount : 0; + const frequencyData = new Uint8Array(bufferLength); + const allScales = []; + const scaleCoefficient = this._getScaleCoefficient(); + + if (this.analyser) { + this.analyser.getByteFrequencyData(frequencyData); + } + + ticks.forEach((tick, i) => { + const coef = 1 - i / (ticks.length * 2.5); + + let delta = ((frequencyData[i] || 0) - lesser * coef) * scaleCoefficient; + + if (delta < 0) { + delta = 0; + } + + let k; + + if (animationParams[0] <= tick.angle && tick.angle <= animationParams[1]) { + k = radius / (radius - this._getSize(tick.angle, animationParams[0], animationParams[1]) - delta); + } else { + k = radius / (radius - (size + delta)); + } + + const x1 = tick.x * (radius - size); + const y1 = tick.y * (radius - size); + const x2 = x1 * k; + const y2 = y1 * k; + + m.push({ x1, y1, x2, y2 }); + + if (i < 20) { + let scale = delta / (200 * scaleCoefficient); + scale = scale < 1 ? 1 : scale; + allScales.push(scale); + } + }); + + const scale = allScales.reduce((pv, cv) => pv + cv, 0) / allScales.length; + + return m.map(({ x1, y1, x2, y2 }) => ({ + x1: x1, + y1: y1, + x2: x2 * scale, + y2: y2 * scale, + })); + } + + _getSize (angle, l, r) { + const scaleCoefficient = this._getScaleCoefficient(); + const maxTickSize = TICK_SIZE * 9 * scaleCoefficient; + const m = (r - l) / 2; + const x = (angle - l); + + let h; + + if (x === m) { + return maxTickSize; + } + + const d = Math.abs(m - x); + const v = 40 * Math.sqrt(1 / d); + + if (v > maxTickSize) { + h = maxTickSize; + } else { + h = Math.max(TICK_SIZE, v); + } + + return h; + } + + _getTickPoints (count) { + const PI = 360; + const coords = []; + const step = PI / count; + + let rad; + + for(let deg = 0; deg < PI; deg += step) { + rad = deg * Math.PI / (PI / 2); + coords.push({ x: Math.cos(rad), y: -Math.sin(rad), angle: deg }); + } + + return coords; + } + + _drawTick (x1, y1, x2, y2) { + const cx = this._getCX(); + const cy = this._getCY(); + + const dx1 = Math.ceil(cx + x1); + const dy1 = Math.ceil(cy + y1); + const dx2 = Math.ceil(cx + x2); + const dy2 = Math.ceil(cy + y2); + + const gradient = this.canvasContext.createLinearGradient(dx1, dy1, dx2, dy2); + + const mainColor = this._getAccentColor(); + const lastColor = hex2rgba(mainColor, 0); + + gradient.addColorStop(0, mainColor); + gradient.addColorStop(0.6, mainColor); + gradient.addColorStop(1, lastColor); + + this.canvasContext.beginPath(); + this.canvasContext.strokeStyle = gradient; + this.canvasContext.lineWidth = 2; + this.canvasContext.moveTo(dx1, dy1); + this.canvasContext.lineTo(dx2, dy2); + this.canvasContext.stroke(); + } + + _getCX() { + return Math.floor(this.state.width / 2); + } + + _getCY() { + return Math.floor(this._getRadius() + (PADDING * this._getScaleCoefficient())); + } + + _getAccentColor () { + return this.props.accentColor || '#ffffff'; + } + + _getBackgroundColor () { + return this.props.backgroundColor || '#000000'; + } + + _getForegroundColor () { + return this.props.foregroundColor || '#ffffff'; + } + + render () { + const { src, intl, alt, editable } = this.props; + const { paused, muted, volume, currentTime, duration, buffer, dragging } = this.state; + const progress = (currentTime / duration) * 100; + + return ( + <div className={classNames('audio-player', { editable })} ref={this.setPlayerRef} style={{ backgroundColor: this._getBackgroundColor(), color: this._getForegroundColor(), width: '100%', height: this.props.fullscreen ? '100%' : (this.state.height || this.props.height) }} onMouseEnter={this.handleMouseEnter} onMouseLeave={this.handleMouseLeave}> + <audio + src={src} + ref={this.setAudioRef} + preload='none' + onPlay={this.handlePlay} + onPause={this.handlePause} + onProgress={this.handleProgress} + crossOrigin='anonymous' + /> + + <canvas + role='button' + className='audio-player__canvas' + width={this.state.width} + height={this.state.height} + style={{ width: '100%', position: 'absolute', top: 0, left: 0 }} + ref={this.setCanvasRef} + onClick={this.togglePlay} + title={alt} + aria-label={alt} + /> + + <img + src={this.props.poster} + alt='' + width={(this._getRadius() - TICK_SIZE) * 2} + height={(this._getRadius() - TICK_SIZE) * 2} + style={{ position: 'absolute', left: this._getCX(), top: this._getCY(), transform: 'translate(-50%, -50%)', borderRadius: '50%', pointerEvents: 'none' }} + /> + + <div className='video-player__seek' onMouseDown={this.handleMouseDown} ref={this.setSeekRef}> + <div className='video-player__seek__buffer' style={{ width: `${buffer}%` }} /> + <div className='video-player__seek__progress' style={{ width: `${progress}%`, backgroundColor: this._getAccentColor() }} /> + + <span + className={classNames('video-player__seek__handle', { active: dragging })} + tabIndex='0' + style={{ left: `${progress}%`, backgroundColor: this._getAccentColor() }} + /> + </div> + + <div className='video-player__controls active'> + <div className='video-player__buttons-bar'> + <div className='video-player__buttons left'> + <button type='button' title={intl.formatMessage(paused ? messages.play : messages.pause)} aria-label={intl.formatMessage(paused ? messages.play : messages.pause)} onClick={this.togglePlay}><Icon id={paused ? 'play' : 'pause'} fixedWidth /></button> + <button type='button' title={intl.formatMessage(muted ? messages.unmute : messages.mute)} aria-label={intl.formatMessage(muted ? messages.unmute : messages.mute)} onClick={this.toggleMute}><Icon id={muted ? 'volume-off' : 'volume-up'} fixedWidth /></button> + + <div className={classNames('video-player__volume', { active: this.state.hovered })} ref={this.setVolumeRef} onMouseDown={this.handleVolumeMouseDown}> + <div className='video-player__volume__current' style={{ width: `${volume * 100}%`, backgroundColor: this._getAccentColor() }} /> + + <span + className={classNames('video-player__volume__handle')} + tabIndex='0' + style={{ left: `${volume * 100}%`, backgroundColor: this._getAccentColor() }} + /> + </div> + + <span className='video-player__time'> + <span className='video-player__time-current'>{formatTime(Math.floor(currentTime))}</span> + <span className='video-player__time-sep'>/</span> + <span className='video-player__time-total'>{formatTime(this.state.duration || Math.floor(this.props.duration))}</span> + </span> + </div> + + <div className='video-player__buttons right'> + <button type='button' title={intl.formatMessage(messages.download)} aria-label={intl.formatMessage(messages.download)} onClick={this.handleDownload}><Icon id='download' fixedWidth /></button> + </div> + </div> + </div> + </div> + ); + } + +} |